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Lynn Canal & Stephens Passage

SidePocket – Residency

58th sighting in Lynn Canal & Stephens Passage
Fluke of SidePocket
SidePocket Confirmed in the catalog @5521
May 11 – Oct 7, 2025 · Lynn Canal & Stephens Passage

Lynn Canal & Stephens Passage · May – Oct 2025

162 m
Deepest dive
4:33
Longest dive
248
Dives
Sightings
21
Days between first and last sighting
149
Deepest dive on record
162 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 11, 202593 m7.8°C61 m
May 12, 202589 m7.7°C16 m
May 15, 202551 m7.3°C35 m
May 17, 2025136 m7.6°C101 m
Jun 5, 2025515 m9.4°C99 m
Jun 18, 202591 m10.5°C43 m
Jul 9, 202545 m12.9°C33 m
Jul 13, 202592 m12.5°C62 m
Aug 17, 2025120 m14.6°C61 m
Aug 18, 202586 m14.1°C52 m
Aug 19, 2025111 m14.2°C60 m
Aug 20, 2025120 m14.2°C46 m
Aug 21, 2025104 m14.2°C54 m
Aug 22, 2025125 m14.2°C75 m
Sep 9, 202569 m14.2°C62 m
Sep 14, 2025111 m13.5°C51 m
Sep 15, 2025100 m13.4°C61 m
Sep 18, 202597 m12.9°C73 m

Seafloor and sea temperature measured · ✳ dives modelled ·

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
May 11, 2025 — seafloor 93 m (measured), deepest dive 61 m (modelled)May 11May 12, 2025 — seafloor 89 m (measured), deepest dive 16 m (modelled)May 15, 2025 — seafloor 51 m (measured), deepest dive 35 m (modelled)May 17, 2025 — seafloor 136 m (measured), deepest dive 101 m (modelled)Jun 5, 2025 — seafloor 515 m (measured), deepest dive 99 m (modelled)Jun 5Jun 18, 2025 — seafloor 91 m (measured), deepest dive 43 m (modelled)Jul 9, 2025 — seafloor 45 m (measured), deepest dive 33 m (modelled)Jul 13, 2025 — seafloor 92 m (measured), deepest dive 62 m (modelled)Aug 17, 2025 — seafloor 120 m (measured), deepest dive 61 m (modelled)Aug 17Aug 18, 2025 — seafloor 86 m (measured), deepest dive 52 m (modelled)Aug 19, 2025 — seafloor 111 m (measured), deepest dive 60 m (modelled)Aug 20, 2025 — seafloor 120 m (measured), deepest dive 46 m (modelled)Aug 21, 2025 — seafloor 104 m (measured), deepest dive 54 m (modelled)Aug 21Aug 22, 2025 — seafloor 125 m (measured), deepest dive 75 m (modelled)Sep 9, 2025 — seafloor 69 m (measured), deepest dive 62 m (modelled)Sep 14, 2025 — seafloor 111 m (measured), deepest dive 51 m (modelled)Sep 15, 2025 — seafloor 100 m (measured), deepest dive 61 m (modelled)Sep 15Sep 18, 2025 — seafloor 97 m (measured), deepest dive 73 m (modelled)Sep 20, 2025 — seafloor 112 m (measured), deepest dive 84 m (modelled)Oct 6, 2025 — seafloor 170 m (measured), deepest dive 83 m (modelled)Oct 7, 2025 — seafloor 183 m (measured), deepest dive 162 m (modelled)Oct 7

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

162 m
Deepest dive
4:33
Longest dive
248
Dives
25 m
Avg dive depth
21
Sightings
149
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200162 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (183 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Oct 7, 2025

measured
Seafloor depth
183 m
Sea-surface temperature
10.6°C
Distance from shore
1.0 km

Across the residency · 21 sightings

measured
Seafloor depth
45 m – 515 m
Sea-surface temperature
7.3°C – 14.6°C
Distance from shore
1.0 km – 6.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 21 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.